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- Posts: 7
- Joined: Tue Jul 26, 2011 8:46 am
recently I did a HPLC assay for drug substance, the result is 95%w/w after correction of water and solvent.
As is result is about 90%, water is about 4.47%w/w and solvent is about 0. Ash is 0.38%w/w. impurity is about 0.7%w/w.
The calucation and precision are quite good. Just wonder what are the posible things for the rest of 5% in the material and normally how to identify them.
Thank you guys!
As is result is about 90%, water is about 4.47%w/w and solvent is about 0. Ash is 0.38%w/w. impurity is about 0.7%w/w.
The calucation and precision are quite good. Just wonder what are the posible things for the rest of 5% in the material and normally how to identify them.
Thank you guys!
